Ключевые слова: angelite, anhydrite, blue, close up, cobble, collection, crystal, crystalline, cube spar, gem, gemmology, gemology, gemstone, geological, geology, isolated, karstenite, little, macro, macro shooting, material, mineral, natural, nature, object, ore, ornamental, pebble, piece, rock, sample, small, specimen, stone, structure, surface, texture, textured, white, white background,